Dual-Transmitter Remote Control Orientation Detection
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Solution Overview
Problem
Conventional remote controls using IR or RF transmitters face issues with signal transmission due to orientation, interference, and user disabilities, leading to inefficient operation and frustration, especially when the user's hand covers the transmitter or the remote is not aligned correctly with the receiving device.
Innovation Solution
A remote control design with two transmitters positioned at opposite ends, equipped with a sensor and processor to detect orientation and activate the appropriate transmitter for reliable signal transmission, regardless of the remote's orientation, thereby improving usability for all users, including those with disabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single IR transmitter is used, then the remote control is simple and inexpensive, but the signal transmission fails when the remote is not aligned correctly with the receiving device
Solution Approach 1:
The remote control is divided into two separate transmitter units positioned at opposite ends of the device. Each transmitter can independently emit signals, allowing the remote to function reliably regardless of which end is facing the receiving device. This segmentation eliminates the alignment problem without requiring complex orientation detection systems.
2Ease of operation
If an RF transmitter is used, then the signal can transmit without line-of-sight requirements, but the bandwidth is crowded and signals are likely to incur interference
Solution Approach 1:
The patent employs both IR and RF transmitters with different operational parameters. The IR transmitter operates at infrared frequencies while the RF transmitter uses radio frequencies. By changing the transmission parameter (frequency band) based on the situation, the system can avoid interference in crowded RF bands while maintaining transmission flexibility.
3Ease of operation
If the transmitter is covered by the user's hand, then the remote control is easy to hold, but both IR and RF signals may fail to transmit
Solution Approach 1:
By placing transmitters at both ends of the remote control, the system ensures that at least one transmitter remains uncovered when the user grips the device normally. This segmentation of transmission points eliminates the blocking problem while maintaining comfortable grip geometry.
4Reliability
If multiple transmitters are used, then the signal transmission reliability improves, but the power consumption and device complexity increase
Solution Approach 1:
The remote control dynamically selects which transmitter to activate based on orientation detection. The processor determines which end of the remote is facing the receiving device and activates only that transmitter. This dynamic operation maintains high reliability while minimizing power consumption by keeping only one transmitter active at a time.
Data Source
AI summary
A remote control including a first transmitter disposed along a first end of a remote control and a second transmitter disposed along a second end opposite the first end. Each transmitter is capable of transmitting a signal to an electronic component. The remote control further includes a sensor configured to detect a characteristic. The remote control also includes a processor that can determine an orientation of the remote control based upon the detected characteristic, and a can power on one of the first transmitter and the second transmitter based upon the determined orientation of the remote control.